 The
Blue Glassy Tiger shares the same habitats with the Dark Glassy Tiger (Parantica
agleoides). When the two species fly together it is not easy to separate
them. However, when the butterflies stop to feed or to rest, the presence
of a transverse black bar in the forewing cell distinguishes the Blue Glassy
Tiger from the Dark Glassy Tiger.
This species is common in Singapore,
particularly in the coastal mangrove areas. The butterflies are also attracted
to the partially dried plants of Heliotropium indicum, usually turning
up within an hour or two after the plants are hung up in the forest reserves.
 The
Blue Glassy Tiger feeds on a lactiferous species of Asclepiadaceae,
particularly Gymnema spp. and is thus distasteful to birds.
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